Question # 1

A statistical hypothesis is an assertion or conjecture about the distribution of random variables

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one

two

one or more

three

n = (A) + --------------------

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(B)

(α)

(β)

(A)

Study of the population is called_______.

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Parameter

Error

Statistic

Census

The _______ regression line always passes through (X̅, y̅).

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Opposite

Estimated

Estimates

Random

In case of normal distribution the area to the left of the mean and area to the right of the mean is

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positive

negative

equal

unequal

If population proportion (P) is unknown, the standard error of the sample proportion (p) can be estimated by the formula

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Commonly used input device is

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pen

keyboard

monitor

joystick

A range of values within which the population parameter is expected:

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Confidence interval

Confidence coefficient

Confidence limits

Level of significance

If we reject Ho when Ho is actually true then it is

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type - I error

type - II error

type - III error

type - IV error

Methods of semi-averages gives an

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accurate result

objective result

authentic result

none of these

The S.D of the sampling distribution of a statistics is called _______.

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Standard error

Serious error

Dispersion

Difference

1 MB equals _________byes

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1,094,265

1,904,265

1,048.576

The graph of time series is called:

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Histogram

Historigram

Straight line

Ogive

The process of dividing the objects into two mutually exclusive classes is called_______

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Bichotomy

Trichotomy

Dichotomy

Multichotomy

If 6Σd²/n(n² - 1) is zero, the value of r_s is ________.

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0.5

1

-1

0

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β₁

β₂

β₃

S_k

In a normal distribution,_____= μ + 0.64745 σ

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Q₁

Q₃

μ

σ

Suppose that the null hypothesis is true and it is rejected, is known as:

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α type-I error, and its probability is β

α type-I error, and its probability is α

α type-II error, and its probability is α

α type-II error, and its probability is β

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